麻黄（去节）二两 赤小豆一升 杏仁（去皮、尖）四十枚 生姜（切）二两 大枣
（擘）十二枚 甘草（炙）二两 生梓白皮（切）一升 连轺二两
以上八味，以潦水一斗，先煮麻黄，再沸去上沫，内诸药，煮取三升，分温三服，半
日则尽。
【方解】
湿热发黄无表里证，热盛者清之，小便不利者利之，里实者下之，表实者汗之，皆无
非为病求去路也。用麻黄汤以开其表，使黄从外而散。去桂枝者，避其热也；佐姜、
枣者，和其荣卫也；加连轺、梓皮以泻其热，赤小豆以利其湿，共成治表实发黄之效
也。连轺，即连翘根。无梓皮以茵陈代之。
【集解】
周扬俊曰：此亦两解表里法也，故用外汗之药，必兼渗湿之味。伤寒发黄者，必其人
太阴素有湿热，更兼寒邪未散，两邪相合，因而蒸郁为黄也。
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伤寒七、八日，身黄如橘子色，小便不利，腹微满者，茵陈蒿汤主之。
【注】
身黄，湿热之为病也。湿盛于热，则黄色晦，热盛于湿，则黄色明，如橘子色者，谓
黄色明也。伤寒七、八日，身黄色明，小便不利，其腹微满，此里热深也。故以茵陈
蒿治疸病者为君，佐以大黄，使以栀子，令湿热从大、小二便泻出，则身黄腹满自可
除矣。
【集注】
唐不岩曰：熏黄，阴黄也，橘子黄，阳黄也。
程知曰：此驱湿除热法也。伤寒七、八日，可下之时；小便不利，腹微满，可下之证
。兼以黄色鲜明，则为三阳入里之邪无疑，故以茵陈除湿，栀子清热，用大黄以助其
驱除，此证之可下者，犹必以除湿为主，而不专取乎攻下有如此者。
麻黄（去节）二两 赤小豆一升 杏仁（去皮、尖）四十枚 生姜（切）二两 大枣（擘）十二枚 甘草（炙）二两 生梓白皮（切）一升 连轺二两
以上八味药，用雨水一斗，先煮麻黄，待水沸腾后撇去浮沫，加入其余药物，煎煮至取汁三升，分三次温服，半天内服完。
【方解】
湿热导致的黄疸没有明显的表证或里证，热邪盛者采用清热法，小便不利者采用利湿法，里有实邪者采用攻下法，表有实邪者采用发汗法，这些方法无非都是为病邪寻找出路。使用麻黄汤（Mahuang Tang, Ephedra Decoction）以开通腠理，使黄疸从体表发散。去掉桂枝（Guizhi, Cinnamon Twig），是为了避免其温热之性；佐以生姜和大枣，是为了调和营卫（Yingwei, Nutritive and Defensive Qi）；加入连轺和梓白皮以泻除热邪，赤小豆以利除湿邪，共同达成治疗表实型发黄的效果。连轺，就是连翘的根。如果没有梓白皮，可以用茵陈代替。
【集解】
周扬俊说：这也是表里双解的方法，所以使用发汗的药物，必须兼用渗湿的药味。伤寒导致发黄的人，必定其人太阴脾经素有湿热，又兼寒邪未散，两种邪气相合，因而蒸郁导致发黄。
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伤寒七、八日，身体黄色如橘子色，小便不利，腹部轻微胀满的，主治方剂为茵陈蒿汤（Yinchenhao Tang, Yin Chen Hao Decoction）。
【注】
身体发黄，是湿热致病。湿邪盛于热邪，则黄色晦暗；热邪盛于湿邪，则黄色鲜明，像橘子色那样，是指黄色鲜明。伤寒七、八日，身体黄色鲜明，小便不利，腹部轻微胀满，这是里热深重。所以以茵陈蒿作为治疗黄疸病的君药，佐以大黃，使以栀子，令湿热从大便和小便排出，那么身体发黄和腹部胀满自然可以消除。
【集注】
唐不岩说：熏黄，属于阴黄；橘子黄，属于阳黄。
程知说：这是驱除湿邪、清除热邪的方法。伤寒七、八日，是可以攻下的时机；小便不利，腹部轻微胀满，是可以攻下的证候。兼有黄色鲜明，则是三阳经邪气入里的证据无疑，所以用茵陈除湿，栀子清热，用大黄帮助驱除，此证虽然可以攻下，但还必须以除湿为主，而不专门取效于攻下，正是如此。
Ephedrae Herba (Mahuang, 麻黄) [deprived of nodes] two liang; Adzuki Bean (Chi Xiaodou, 赤小豆) one sheng; Apricot Seed (Xingren, 杏仁) [deprived of skin and tip] forty pieces; Fresh Ginger (Shengjiang, 生姜) [sliced] two liang; Jujube (Dazao, 大枣) [split] twelve pieces; Licorice Root (Gancao, 甘草) [roasted] two liang; Cortex Catalpae Viridis (Shengzi Bapi, 生梓白皮) [sliced] one sheng; Forsythiae Radix (Lianyao, 连轺) two liang.
The above eight ingredients are decocted with one dou of rainwater. First, boil Mahuang until boiling, then skim off the foam on the surface. Add the remaining herbs, decoct to obtain three sheng of liquid, divide into three warm doses, and finish within half a day.
[Formula Analysis]
For jaundice caused by damp-heat without obvious exterior or interior syndromes: if heat is predominant, clear it; if urination is difficult, promote diuresis; if there is interior excess, purge it; if there is exterior excess, induce sweating. All these methods aim to provide an exit path for the pathogenic factors. Use Mahuang Tang (Mahuang Tang, Ephedra Decoction) to open the exterior, allowing the jaundice to dissipate from the outside. Guizhi (Guizhi, Cinnamon Twig) is omitted to avoid its heating nature; Shengjiang (Shengjiang, Fresh Ginger) and Dazao (Dazao, Jujube) are added to harmonize Yingwei (Yingwei, Nutritive and Defensive Qi); Lianyao (Lianyao, Forsythiae Radix) and Zibapi (Zibapi, Cortex Catalpae Viridis) are added to drain heat, and Chi Xiaodou (Chi Xiaodou, Adzuki Bean) is used to promote dampness drainage, jointly achieving the effect of treating exterior-excess jaundice. Lianyao refers to the root of Forsythia suspensa. If Zibapi is unavailable, Yinchen (Yinchen, Artemisiae Scopariae Herba) can be used as a substitute.
[Collection of Explanations]
Zhou Yangjun stated: This is also a method of simultaneously resolving the exterior and interior. Therefore, when using diaphoretic drugs, they must be combined with damp-draining agents. In cases where Shanghan (Shanghan, Cold Damage) leads to jaundice, the patient invariably has pre-existing damp-heat in the Taiyin Spleen, compounded by undissipated cold pathogens. The combination of these two pathogens steams and stagnates, resulting in jaundice.
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In Shanghan (Shanghan, Cold Damage) lasting seven to eight days, if the body is yellow like the color of an orange, accompanied by difficult urination and slight abdominal fullness, treat with Yinchenhao Tang (Yinchenhao Tang, Yin Chen Hao Decoction).
[Annotation]
Body yellowing is a disease caused by damp-heat. When dampness predominates over heat, the yellow color is dull; when heat predominates over dampness, the yellow color is bright. "Like the color of an orange" means the yellow is bright. After seven to eight days of Shanghan (Shanghan, Cold Damage), if the body is brightly yellow, urination is difficult, and there is slight abdominal fullness, this indicates deep interior heat. Therefore, use Yinchenhao (Yinchenhao, Artemisiae Scopariae Herba) as the sovereign drug for treating jaundice, supplemented by Dahuang (Dahuang, Rheum Palmati Radix et Rhizoma), and guided by Zhizi (Zhizi, Gardeniae Fructus), so that damp-heat is excreted through the large and small intestines. Consequently, body yellowing and abdominal fullness will naturally resolve.
[Collection of Annotations]
Tang Buyan stated: Xunhuang (Xunhuang, Smoked Yellow) belongs to Yin Jaundice (Yin Huang, Yin-type Jaundice); Orange-yellow belongs to Yang Jaundice (Yang Huang, Yang-type Jaundice).
Cheng Zhi stated: This is a method of driving out dampness and eliminating heat. At seven to eight days of Shanghan (Shanghan, Cold Damage), it is the appropriate time for purging; difficult urination and slight abdominal fullness are indications for purging. Coupled with the bright yellow color, it is undoubtedly evidence of pathogens from the Three Yang channels entering the interior. Thus, Yinchen (Yinchen, Artemisiae Scopariae Herba) is used to remove dampness, Zhizi (Zhizi, Gardeniae Fructus) to clear heat, and Dahuang (Dahuang, Rheum Palmati Radix et Rhizoma) to assist in expulsion. Although this syndrome allows for purging, it must still prioritize dampness removal rather than relying solely on purgation, which is why such treatment is employed.